MCQOPTIONS
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MCQOPTIONS
This section includes 204 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
All of the following are pesticides EXCEPT |
| A. | Aldrin |
| B. | Endrin |
| C. | Chloroform |
| D. | BHC |
| E. | None of the above |
| Answer» D. BHC | |
| 2. |
When the trees are planted by road side, the average distance between two trees should be |
| A. | 2 to 3 metres |
| B. | 5 to 8 metres |
| C. | 10 to 15 metres |
| D. | 25 to 30 metres |
| E. | None of the above |
| Answer» D. 25 to 30 metres | |
| 3. |
Which of the following pollutant results from decaying organic matter? |
| A. | Acetylene |
| B. | Ozone |
| C. | Ammonia |
| D. | Nitric oxide |
| E. | None of the above |
| Answer» D. Nitric oxide | |
| 4. |
Electric fuses provide protection against |
| A. | sparking |
| B. | overloads |
| C. | single phasing |
| D. | low current and voltage |
| E. | None of the above |
| Answer» C. single phasing | |
| 5. |
Which of the following is the major source of pollutant hydrogen sulphide? |
| A. | Decaying organic matter |
| B. | Auto exhaust |
| C. | Oil burners |
| D. | Solar energy |
| E. | None of the above |
| Answer» B. Auto exhaust | |
| 6. |
The maximum acceptable noise level in offices is |
| A. | 10 dB |
| B. | 40 dB |
| C. | 75 dB |
| D. | 100 dB |
| E. | None of the above |
| Answer» C. 75 dB | |
| 7. |
Addition to alum increases |
| A. | hardness of water |
| B. | carbonates of water |
| C. | sulphates in water |
| D. | Acidity of water |
| E. | None of the above |
| Answer» E. None of the above | |
| 8. |
All of the following are souhd obsorptive materials EXCEPT |
| A. | Rugs |
| B. | Mirrors |
| C. | Carpets |
| D. | Heavy drapes |
| E. | None of the above |
| Answer» C. Carpets | |
| 9. |
Which of the following is an insect born disease? |
| A. | Q-fever |
| B. | Ring worm |
| C. | Jaundice |
| D. | Tetanus |
| E. | None of the above |
| Answer» B. Ring worm | |
| 10. |
Which of the following area of work needs lowest level of illumination? |
| A. | Engraving |
| B. | Cloth inspection |
| C. | Assembly of instrument |
| D. | Paper converting processes |
| E. | None of the above |
| Answer» E. None of the above | |
| 11. |
Suspended liquid droplets generated by condensation from the gaseous to the liquid state or by breaking up a liquid into a dispersed state is known as |
| A. | Dust |
| B. | Fume |
| C. | Mist |
| D. | Vapours |
| E. | None of the above |
| Answer» D. Vapours | |
| 12. |
Type of radiation expected from earbon 14 is |
| A. | Alpha |
| B. | Beta |
| C. | Gamma |
| D. | Alpha, Beta, Gamma |
| E. | None of the above |
| Answer» C. Gamma | |
| 13. |
Dust particles in industrial processes may be generated by |
| A. | Crushing |
| B. | Grinding |
| C. | Detonation |
| D. | Rapid impact |
| E. | Any of the above processes |
| Answer» F. | |
| 14. |
The volume fraction of ozone in atmospheric air is nearly |
| A. | 0.02 ppm |
| B. | 0.2 ppm |
| C. | 2 ppm |
| D. | 20 ppm |
| E. | None of the above |
| Answer» B. 0.2 ppm | |
| 15. |
All of the following pollutants result from auto-exhaust EXCEPT |
| A. | Acetylene |
| B. | Olefins |
| C. | Hydrogen sulphide |
| D. | Ethylene |
| E. | None of the above |
| Answer» B. Olefins | |
| 16. |
Which of the following area of work needs lowest noise level? |
| A. | Gymnasiums |
| B. | Lecture halls |
| C. | Library |
| D. | Kitchens |
| E. | None of the above |
| Answer» D. Kitchens | |
| 17. |
The noise level due to auto horn may be of the order of |
| A. | 110 dB |
| B. | 80 dB |
| C. | 50 dB |
| D. | 35 dB |
| E. | None of the above |
| Answer» B. 80 dB | |
| 18. |
The speed of sound will be maximum through |
| A. | Water |
| B. | Alcohol |
| C. | Concrete |
| D. | Aluminium |
| E. | None of the above |
| Answer» E. None of the above | |
| 19. |
The becteria that can survive without oxygen is called |
| A. | Facultative bacteria |
| B. | Anerobic bacteria |
| C. | Aerobic bacteria |
| D. | Furobic bacteria |
| E. | All of the above |
| Answer» B. Anerobic bacteria | |
| 20. |
Geiger Muller counter can detect |
| A. | beta rays |
| B. | X-rays |
| C. | gamma rays |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 21. |
The bad smell due to decomposition of sewage, on account of the action of bacteria, is mainly due to the presence of |
| A. | Dead bacteria |
| B. | Oxygen |
| C. | Carbondioxide |
| D. | Hydrogen sulphide |
| E. | None of the above |
| Answer» E. None of the above | |
| 22. |
Scintillation counter can detect |
| A. | beta rays |
| B. | X-rays |
| C. | gamma rays |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 23. |
Lead is a cumulative poison which ends up in |
| A. | eyes |
| B. | eyes and ears |
| C. | bones and tissues |
| D. | legs and hands |
| E. | None of the above |
| Answer» D. legs and hands | |
| 24. |
Normally the colour of exhaust from a diesel engine is |
| A. | black |
| B. | white |
| C. | yellow |
| D. | reddish |
| E. | None of the above |
| Answer» B. white | |
| 25. |
Small concentrations of fluorides in water |
| A. | reduce the prevalence of dental caries |
| B. | increase the prevalence of dental carries |
| C. | cause irritation in eyes |
| D. | do not arm in any way |
| E. | None of the above |
| Answer» B. increase the prevalence of dental carries | |
| 26. |
Which of the following radio-nuclide has the shortest half life? |
| A. | Carbon 14 |
| B. | Cesium 137 |
| C. | Cobalt 60 |
| D. | Iodine 131 |
| E. | None of the above |
| Answer» E. None of the above | |
| 27. |
Water with least contamination can be be obtained from |
| A. | Lakes |
| B. | Spring along the hill slope |
| C. | Wells |
| D. | Reservoirs |
| E. | Rivers |
| Answer» C. Wells | |
| 28. |
For the combustion of 1 kg of carbon, the quantity of oxygen required is |
| A. | 2.62 kg |
| B. | 3.67 kg |
| C. | 8 kg |
| D. | 11.6 kg |
| E. | None of the above |
| Answer» B. 3.67 kg | |
| 29. |
Acute poisoning may be the result of entry into the body of large of concentrated doses of poison through |
| A. | Breathing |
| B. | Swalowing |
| C. | Skin absorption |
| D. | Injection |
| E. | Any of the above |
| Answer» F. | |
| 30. |
For controlling algae, the chemical generally used is |
| A. | alum |
| B. | lime |
| C. | copper sulphate |
| D. | bleaching powder |
| E. | None of the above |
| Answer» D. bleaching powder | |
| 31. |
Carbondioxide has all the following properties EXCEPT that it is |
| A. | colourless |
| B. | odourless |
| C. | tasteless |
| D. | readily soluble in water |
| E. | None of the above |
| Answer» E. None of the above | |
| 32. |
The number of air changes per hour recommended for auditoria is |
| A. | 3 to 6 |
| B. | 6 to 10 |
| C. | 10 to 12 |
| D. | 15 to 20 |
| E. | None of the above |
| Answer» B. 6 to 10 | |
| 33. |
While smoke from a diesel engine can be expected during |
| A. | Start up or idling |
| B. | High load operating |
| C. | High speed operation |
| D. | All of the above |
| E. | None of the above |
| Answer» B. High load operating | |
| 34. |
All of the following pollutants affect heart EXCEPT |
| A. | Cadmium |
| B. | Arsenic |
| C. | Lead |
| D. | Carbon monoxide |
| E. | None of the above |
| Answer» C. Lead | |
| 35. |
Plants that grow in absence of sublight in water, are called |
| A. | Algae |
| B. | Shrubs |
| C. | Fungi |
| D. | Any of the above |
| E. | All of the above |
| Answer» D. Any of the above | |
| 36. |
Soft waters |
| A. | Have corrosive action on metals |
| B. | Dissolve lead |
| C. | Corrode iron |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 37. |
Carbon monoxide poisoning may cause |
| A. | headache |
| B. | drowsiness |
| C. | dizziness |
| D. | Any of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 38. |
Desalination is usually needed for |
| A. | well water |
| B. | rain water |
| C. | sea water |
| D. | river water |
| E. | None of the above |
| Answer» D. river water | |
| 39. |
Which of the following is used in the recently developed technology for communication? |
| A. | Optical fibre |
| B. | Glass fibre |
| C. | Nylon fibre |
| D. | Quartz fibre |
| E. | None of these |
| Answer» B. Glass fibre | |
| 40. |
Air pollutants common to urban environments are |
| A. | sulphur dioxide |
| B. | particulate matter |
| C. | Hydrocarbons |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 41. |
Which of the following pollutant affects lungs? |
| A. | Silica |
| B. | Benzene |
| C. | Lead |
| D. | Aldrin |
| E. | None of the above |
| Answer» B. Benzene | |
| 42. |
Turbidity of water is usually measured in terms of |
| A. | Sodium scale |
| B. | Silica scale |
| C. | Cobalt scale |
| D. | Platinum scale |
| E. | Calcium scale |
| Answer» C. Cobalt scale | |
| 43. |
The desirable temperature of portable water is |
| A. | 10?C |
| B. | 37?C |
| C. | 27?C |
| D. | zero degree centigrade |
| E. | 20?C |
| Answer» B. 37?C | |
| 44. |
Ionisation chamber can be used for the detection of all of the following EXCEPT |
| A. | beta rays |
| B. | X-rays |
| C. | gamma rays |
| D. | Alpha rays |
| E. | None of the above |
| Answer» E. None of the above | |
| 45. |
Temporary hardness in water in caused by salts like |
| A. | Sulphates |
| B. | Nitrates |
| C. | Chlorides |
| D. | Carbonates |
| E. | All of the above |
| Answer» E. All of the above | |
| 46. |
Black holes are celestial bodies which |
| A. | Have strong magentic field |
| B. | Have strong electrical field |
| C. | Do not allow any light to escape outside |
| D. | Are self luminous bodies |
| E. | Green |
| Answer» D. Are self luminous bodies | |
| 47. |
The colour of water is measured |
| A. | In ferms of pH value |
| B. | In terms of degree of hardness |
| C. | In terms of platinum cobalt scale |
| D. | ppm of dissolved solids |
| E. | None of the above |
| Answer» D. ppm of dissolved solids | |
| 48. |
The presence of which of the following material in water is not considered to be dangerous? |
| A. | Copper |
| B. | Zinc |
| C. | Mercury |
| D. | Calcium |
| E. | Lead |
| Answer» E. Lead | |
| 49. |
The pH value of concentrated sulphuric acid could be expected between |
| A. | 6 and 5 |
| B. | 7 and 6 |
| C. | 1 and 0 |
| D. | 4 and 3 |
| E. | 3 and 1 |
| Answer» D. 4 and 3 | |
| 50. |
In case of public supplies, the maximum permissible nitrite content is |
| A. | 250 ppm |
| B. | 100 ppm |
| C. | 50 ppm |
| D. | 200 ppm |
| E. | zero ppm |
| Answer» F. | |